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Polymers
Special Issues
Organic Polymers and Their Applications
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Organic Polymers and Their Applications

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Polymer Chemistry".

Deadline for manuscript submissions: closed (30 December 2023) | Viewed by 10175

Special Issue Editors

Dr. Qui Thanh Hoai Ta

E-Mail Website
Guest Editor
Department of Physics, Gachon University, 1342 Seongnamdaero, Seongnam-si 13120, Republic of Korea
Interests: 2D nanomaterials; polymer synthesis; photocatalytic; environmental treatment
Dr. Thi Hoa Le

E-Mail Website
Guest Editor
Department of Chemical and Biological Engineering, Gachon University, Seongnam 13120, Republic of Korea
Interests: polymer modification; fluorescence recovery; nanocomposites

Special Issue Information

Dear Colleagues,

The field of organic polymers is still in in its infancy. Apart from in situ particle preparation, most techniques aim to prevent the agglomeration of nanomaterial species. Some well-known techniques include hydrothermal and sol–gel synthesis. Since cross-linking by covalent bonds forms polymer matrices, methods for their preparation have been a challenge. Thus, polymer networks (e.g., porous organic polymers (POPs), covalent organic frameworks (COFs), and metal-organic frameworks (MOFs)) are still at the stage where researchers are focused on the enhancement of their preparation techniques, and on developing our understanding of molecular and structure–property correlations for practical applications.

This Special Issue on “Organic Polymers and Their Applications” will publish advances in polymer chemistry pertaining to theoretical and experimental aspects of the design, synthesis, and development of entirely new polymer networks to find applications in a wide range of areas—for instance, organic polymers for gas sensors, energy storage, polymeric biomaterials, optics, and solar cells. Original research articles and comprehensive reviews are welcome.

Dr. Qui Thanh Hoai Ta
Dr. Thi Hoa Le
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Polymers is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • polymers
  • building blocks
  • porous structure
  • hybrid nanomaterials
  • sol–gel processes
  • topologies
  • inorganic nanoparticles

Published Papers (4 papers)

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Research

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13 pages, 5326 KiB  
Article
Temperature Self-Adaptive and Color-Adjustable Smart Window Based on Templated Cholesteric Liquid Crystals
by Changli Sun and Jiangang Lu
Polymers 2024, 16(1), 82; https://0-doi-org.brum.beds.ac.uk/10.3390/polym16010082 - 26 Dec 2023
Viewed by 922
Abstract
Cholesteric liquid crystals (CLCs) exhibit selective reflection due to their self-assembled helical superstructures. Reconfigurable templates can achieve integration functions via inducing processes of molecular assemblies. Here we demonstrate temperature self-adaptive and color-adjustable smart windows using CLCs, which are fabricated via the templating method [...] Read more.
Cholesteric liquid crystals (CLCs) exhibit selective reflection due to their self-assembled helical superstructures. Reconfigurable templates can achieve integration functions via inducing processes of molecular assemblies. Here we demonstrate temperature self-adaptive and color-adjustable smart windows using CLCs, which are fabricated via the templating method and exhibit simultaneous reflections in the visible and infrared spectra. Reflection bands formed by the refilled CLC materials can be adjusted reversibly both upon thermal and electrical actuation. In CLC with adjustable reflection in the infrared, the central wavelength of the infrared reflection band can be adjusted from 950 nm to 1305 nm via temperature, and from 1150 nm to 950 nm via electric field. A temperature variation of 10.3 °C within 55 s was induced by the single-layer templated CLC cell, and a comfortable temperature range could be effectively maintained by the CLC cell in a varied environment. In CLC with dynamic color in the visible spectrum, color shifts from 530 nm to 650 nm tuned by temperature and from 530 nm to 440 nm adjusted by electric field were obtained. Temperature-responsive reflection in the infrared spectrum contributes to automatic thermal management, and electric-field-induced band shift in the visible spectrum enables active dynamic color adjustment. The presented templated CLC smart windows show considerable potential in energy conservation and biological clock regulation fields. Full article
(This article belongs to the Special Issue Organic Polymers and Their Applications)
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11 pages, 2036 KiB  
Article
Enhancement of Power Conversion Efficiency of Non-Fullerene Organic Solar Cells Using Green Synthesized Au–Ag Nanoparticles
by Victor Okai, Habibat Faith Chahul and Rafi Shikler
Polymers 2023, 15(6), 1482; https://0-doi-org.brum.beds.ac.uk/10.3390/polym15061482 - 16 Mar 2023
Cited by 1 | Viewed by 1748
Abstract
Organic-based photovoltaics are excellent candidates for renewable energy alternatives to fossil fuels due to their low weight, low manufacturing cost, and, in recent years, high efficiency, which is now above 18%. However, one cannot ignore the environmental price of the fabrication procedure due [...] Read more.
Organic-based photovoltaics are excellent candidates for renewable energy alternatives to fossil fuels due to their low weight, low manufacturing cost, and, in recent years, high efficiency, which is now above 18%. However, one cannot ignore the environmental price of the fabrication procedure due to the usage of toxic solvents and high-energy input equipment. In this work, we report on the enhancement of the power conversion efficiency non-fullerene organic solar cells by incorporating green synthesised Au–Ag nanoparticles, using onion bulb extract, into the hole transport layer poly (3,4-ethylene dioxythiophene)-poly (styrene sulfonate) (PEDOT: PSS) of Poly[4,8-bis(5-(2-ethylhexyl)thiophen-2-yl)benzo[1,2-b;4,5-b′]dithiophene-2,6-diyl-alt-(4-(2-ethylhexyl)-3 fluorothieno[3,4-b]thiophene-)-2-carboxylate-2-6-diyl)]: 3,9-bis(2-methylene-(3-(1,1-dicyanomethylene)-indanone))-5,5,11,11-tetrakis(4-hexylphenyl)-dithieno[2,3-d:2′,3′-d′]-s-indaceno[1,2-b:5,6-b′]dithiophene (PTB7-Th: ITIC) bulk-heterojunction organic solar cells. Red onion has been reported to contain quercetin, which serves as a capping agent that covers bare metal nanoparticles, thus reducing exciton quenching. We found that the optimized volume ratio of NPs to PEDOT: PSS is 0.06:1. At this ratio, a 24.7% enhancement in power conversion efficiency of the cell is observed, corresponding to a 9.11% power conversion efficiency (PCE). This enhancement is due to an increase in the generated photocurrent and a decrease in the serial resistance and recombination, as extracted from the fitting of the experimental data to a non-ideal single diode solar cell model. It is expected that the same procedure can be applied to other non-fullerene acceptor-based organic solar cells, leading to an even higher efficiency with minimal effect on the environment. Full article
(This article belongs to the Special Issue Organic Polymers and Their Applications)
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Review

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20 pages, 9338 KiB  
Review
Covalent Organic Frameworks: From Structures to Applications
by Quang Nhat Tran, Hyun Jong Lee and Ngo Tran
Polymers 2023, 15(5), 1279; https://0-doi-org.brum.beds.ac.uk/10.3390/polym15051279 - 2 Mar 2023
Cited by 23 | Viewed by 3592
Abstract
Three-dimensional covalent organic frameworks possess hierarchical nanopores, enormous surface areas with high porosity, and open positions. The synthesis of large crystals of three-dimensional covalent organic frameworks is a challenge, since different structures are generated during the synthesis. Presently, their synthesis with new topologies [...] Read more.
Three-dimensional covalent organic frameworks possess hierarchical nanopores, enormous surface areas with high porosity, and open positions. The synthesis of large crystals of three-dimensional covalent organic frameworks is a challenge, since different structures are generated during the synthesis. Presently, their synthesis with new topologies for promising applications has been developed by the use of building units with varied geometries. Covalent organic frameworks have multiple applications: chemical sensing, fabrication of electronic devices, heterogeneous catalysts, etc. We have presented the techniques for the synthesis of three-dimensional covalent organic frameworks, their properties, and their potential applications in this review. Full article
(This article belongs to the Special Issue Organic Polymers and Their Applications)
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25 pages, 9228 KiB  
Review
Designed Synthesis of Three-Dimensional Covalent Organic Frameworks: A Mini Review
by Pham Thi Phan, Qui Thanh Hoai Ta and Phan Khanh Thinh Nguyen
Polymers 2023, 15(4), 887; https://0-doi-org.brum.beds.ac.uk/10.3390/polym15040887 - 10 Feb 2023
Cited by 6 | Viewed by 2819
Abstract
Covalent organic frameworks are porous crystals of polymers with two categories based on their covalent linkages: layered structures with two dimensions and networks with three-dimensional structures. Three-dimensional covalent organic frameworks are porous, have large surface areas, and have highly ordered structures. Since covalent [...] Read more.
Covalent organic frameworks are porous crystals of polymers with two categories based on their covalent linkages: layered structures with two dimensions and networks with three-dimensional structures. Three-dimensional covalent organic frameworks are porous, have large surface areas, and have highly ordered structures. Since covalent bonds are responsible for the formation of three-dimensional covalent organic frameworks, their synthesis has been a challenge and different structures are generated during the synthesis. Moreover, initially, their topologies have been limited to dia, ctn, and bor which are formed by the condensation of triangular or linear units with tetrahedral units. There are very few building units available for their synthesis. Finally, the future perspective of 3D COFs has been designated for the future development of three-dimensional covalent organic frameworks. Full article
(This article belongs to the Special Issue Organic Polymers and Their Applications)
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